Jam and Coconut Cake Traybake
Soft, reliable, and wonderfully simple, Jam and Coconut Cake is a classic British traybake with a light sponge, a glossy jam topping, and a sweet coconut finish that makes it ideal for family baking, afternoon tea, or an easy make-ahead cake.
This is the kind of cake that feels instantly familiar. It uses everyday ingredients, comes together without fuss, and bakes into a tender sponge that holds up beautifully under a thin layer of jam and coconut.
What makes it work so well is the contrast. You get a soft, buttery crumb underneath, then a fruity top layer that adds shine and sweetness, followed by coconut for a little texture and a traditional finish.
It is also a very practical bake for real life. You can make it for a casual weekend treat, slice it for lunchboxes, or set it out on a tea table when you want something homemade that still looks charming.
What You Need to Make This Jam and Coconut Cake
Eggs bring structure and richness to the sponge. Letting them come to room temperature helps the batter mix more smoothly and gives you a more even crumb.
Margarine creates a soft, tender cake and creams easily with the sugar, which helps the traybake bake up light rather than heavy.
Fine sugar sweetens the cake and helps with that pale, fluffy base when beaten well with the margarine.
Self-rising flour gives the sponge its lift and keeps the method very straightforward. Folding it in gently helps preserve the air you created during mixing.
Fruit jam forms the glossy top layer. Apricot gives a gentle, golden fruitiness, while raspberry adds a brighter, slightly sharper contrast.
Sweetened shredded coconut finishes the cake with its signature look and texture. It adds sweetness, a little chew, and that classic old-fashioned traybake feel.
Cooking Steps
STEP 1: Start by heating your oven and lining a rectangular baking tin well. A properly lined tin makes lifting the finished cake much easier and helps protect the edges from sticking.
STEP 2: Beat the margarine and sugar together until the mixture looks pale and fluffy. This step matters more than it seems because it builds air into the batter and helps the finished sponge stay light.
STEP 3: Add the eggs one at a time, mixing well after each addition. This gradual method keeps the batter smooth and helps everything emulsify instead of separating.
STEP 4: Sift in the self-rising flour and fold it through gently. You want a smooth, even batter, but you do not want to overmix at this point or the sponge can lose some of its softness.
STEP 5: Spread the batter evenly in the prepared tin and bake until the cake is risen, lightly golden, and springy in the middle. A skewer inserted into the center should come out clean or with only a few soft crumbs.
STEP 6: Let the cake rest briefly in the tin, then move it to a wire rack and cool it completely. This is important because warm cake can make the jam slide around instead of sitting neatly on top.
STEP 7: Once cold, spread the jam all the way to the corners, then scatter the coconut evenly over the surface. Press very lightly if needed so the coconut settles into the jam and stays in place when sliced.
Helpful Tips
- Beat the margarine and sugar until truly fluffy, not just combined. That extra minute or two makes a noticeable difference in the texture.
- Cool the cake completely before topping it, otherwise the jam can become too runny and the coconut may absorb moisture unevenly.
- Use just enough warmed jam to coat the top neatly. A thick, heavy layer can overpower the sponge and make slicing messier.
Can I use raspberry jam instead of apricot?
Yes, and it works beautifully. Raspberry jam gives the cake a brighter fruit flavor and a little more sharpness, while apricot keeps the topping softer and slightly more traditional. Choose the one that matches the balance you want.
Why did my sponge turn out dense?
A dense result usually comes from under-creaming the margarine and sugar, overmixing after adding the flour, or using cold eggs that do not blend smoothly into the batter. Gentle folding and proper mixing at the beginning make a big difference.
Can I make this traybake a day ahead?
Absolutely. In fact, it is a very good make-ahead cake because the texture stays soft and the topping settles nicely once it has had a little time to rest. Store it covered at room temperature or chilled if your kitchen is warm.
Does the jam need to be warmed first?
Not always, but slightly warming it can make spreading much easier, especially if the jam is thick. You only want it loosened, not hot, so it glides over the top without soaking into the cake.
Perfect Pairings
A hot mug of tea is the most natural match for this traybake. The simple sponge, fruit topping, and coconut finish feel especially at home beside black tea or something light and floral.
It is also lovely with coffee when you want a straightforward afternoon cake that is sweet but not overly rich. The jam on top gives just enough extra flavor to keep each bite interesting.
For a slightly more dessert-like presentation, serve a slice with a spoonful of softly whipped cream. That works especially well when you use raspberry jam and want a little extra contrast.
Keeping Leftovers Fresh
Store the cake in an airtight container once it is completely cool and topped. At room temperature, it is usually best within 2 days, especially in a cooler kitchen. In the fridge, it will keep well for about 4 to 5 days.
If you want to freeze it, slice it first so you can take out individual portions more easily. Wrap the slices well and freeze for up to 2 months. Thaw them at room temperature until soft again.
This is not really a cake that needs reheating, but if you prefer it slightly softer, a very brief few seconds in the microwave can take the chill off. For the neatest texture, though, letting it come back to room temperature naturally is usually the better choice.
Jam and Coconut Cake
Ingredients
- 5 large eggs brought to room temperature
- 280 grams margarine
- 280 grams fine sugar
- 300 grams fruit jam such as apricot or raspberry
- 280 grams self-rising flour preferably Swans Down for a lighter crumb
- 100 grams sweetened shredded coconut
Instructions
- Heat the oven to 180°C, or 160°C for a fan oven, or Gas Mark 4. Line a 9 x 12-inch baking tin with greaseproof paper and set it aside.
- Place the margarine and sugar into a large mixing bowl and beat together until the mixture becomes pale and fluffy.
- Add the eggs individually, beating well after each addition so that every egg is fully incorporated before the next is added.
- Sift the self-rising flour into the bowl, then fold it in gently until a smooth, even batter has formed.
- Spoon the batter into the prepared tin and level the surface evenly. Bake for 30 to 40 minutes, or until the cake is well risen, lightly golden, and a skewer inserted into the centre comes out clean.
- Remove the cake from the oven and leave it in the tin for a few minutes so it can settle and firm slightly.
- Transfer the cake to a wire rack and allow it to cool completely. This helps prevent moisture from collecting underneath.
- Once the cake is fully cold, warm the jam in the microwave for about 20 seconds, if desired, to make it easier to spread.
- Cover the top of the cake with the jam, taking it right to the edges and into the corners.
- Scatter the shredded coconut evenly over the jam to finish.